Query: exec_tls_authentication_docker_daemon_configured

with os_output as (
  select
    btrim(stdout_output, E' \n\r\t') as os,
    _ctx ->> 'connection_name' as os_conn
  from
    exec_command
  where
    command = 'uname -s'
), hostname as (
  select
    btrim(stdout_output, E' \n\r\t') as host,
    _ctx ->> 'connection_name' as host_conn,
    _ctx
  from
    exec_command
  where
    command = 'hostname'
),

linux_output as (
  select
    stdout_output,
    _ctx ->> 'connection_name' as conn
  from
    exec_command,
    os_output
  where
    os_conn = _ctx ->> 'connection_name'
    and command = 'cat /etc/docker/daemon.json'
)
select
  host as resource,
  case
    when os.os ilike '%Darwin%' then 'skip'
    when o.stdout_output::jsonb->>'hosts' not like '%tcp%' then 'info'
    when o.stdout_output::jsonb->>'tlsverify' = 'true'
      and o.stdout_output::jsonb->>'tlscacert' <> ''
      and o.stdout_output::jsonb->>'tlscert' <> ''
      and o.stdout_output::jsonb->>'tlskey' <> '' then 'ok'
    else 'alarm'
  end as status,
  case
    when os.os ilike '%Darwin%' then host || ' /etc/docker/daemon.json does not exist on ' || os.os || ' OS.'
    when o.stdout_output::jsonb->>'hosts' not like '%tcp%' then host || ' Docker daemon not listening on TCP.'
    when o.stdout_output::jsonb->>'tlsverify' = 'true'
      and o.stdout_output::jsonb->>'tlscacert' <> ''
      and o.stdout_output::jsonb->>'tlscert' <> ''
      and o.stdout_output::jsonb->>'tlskey' <> '' then host || ' TLS authentication for Docker daemon is configured.'
    else host || ' TLS authentication for Docker daemon is not configured.'
  end as reason
  , h._ctx ->> 'connection_name' as connection_name
from
  hostname as h,
  os_output as os,
  linux_output as o
where
  os.os_conn = h.host_conn
  and h.host_conn = o.conn